封堵防塌钻井液处理剂研究进展

Research Advances of Plugging Anti-sloughing Drilling Fluid Additives

孔 勇 金军斌 林永学 徐江 刘贵传

KONG Yong，JIN Junbin，LIN Yongxue，XU Jiang，LIU Guichuan

随着钻遇地层条件日益复杂， 钻井作业对钻井液的防塌性能和强化井壁能力要求越来越高。封堵防塌处理剂能通过封堵地层原生孔隙和微裂缝， 阻隔水化作用通道， 提高钻井液的封堵能力， 减少钻井液中的自由水侵入地层， 降低地层坍塌压力从而起到稳定井壁的作用。简要介绍了沥青类处理剂、 硅酸盐处理剂和聚合醇等常规封堵防塌处理剂， 重点介绍了铝基封堵防塌处理剂、 纳米封堵防塌处理剂和仿生固壁防塌处理剂等的国内外研究和应用情况， 提出了封堵防塌处理剂的发展方向。参 52

The requirement of drilling operations on the anti-collapse and bonding reinforced wall performance of drilling fluid was increasing as the drilling formation conditions became increasingly complex. Plugging anti-sloughing drilling fluid additives could plug the primary pore throat and micro cracks in the formation，block the water channel，improve the sealing performance of drilling fluid，prevent free water intrusion into formation，reduce the collapse pressure of the formation and strengthen the wall. Asphalt drilling fluid additive，silicate agent，polyglycol agent and other conventional plugging and anti- sloughing drilling fluid additives were briefly introduced in this article. The recent research and application at home and abroad of aluminium-based anti-sloughing drilling fluid additive，nano anti-sloughing drilling fluid additive and biomimetic wellbore strengthener were mainly described. The development suggestions of anti-sloughing agents were also proposed.

10.19346./j.cnki.1000-4092.2017.03.034